Detection of Rickettsia spp. in Rhipicephalus sanguineus ( sensu lato ) collected from free-roaming dogs in Coahuila state, northern Mexico

Background The aim of this study was to detect and molecularly identify Rickettsia spp. in Rhipicephalus sanguineus (sensu lato) collected from free-roaming dogs in 30 communities from five municipalities in the south of Coahuila State, northern Mexico, where Rocky Mountain spotted fever is endemic.